1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32d3f3653af7451c3094cab8ff6f17985812b4aaa4270d7d4a2b9cf4e7ba045. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ef1dfce-8448-46f6-bf10-b398f37efad4.json and https://artists.proofprofile.net/proofs/artist/5ef1dfce-8448-46f6-bf10-b398f37efad4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b4064232d4404e799ebabf8590b06a234c9c433f2f260f98434e8ac1eb1aeb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32491115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cff18f8f0b84b137bc67fe1e0613f92a7515c6d47a5c4322042e98a92528283. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52463565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c518eb1827d5ab3e64ec4dd1f46b7698e502ba7aeea25e4866355566f4c4c6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFM2335315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb30a963f0a50e0dfcbb6d0d1a89f6f08b1079854a0f0d8f5006efc8e0931459. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2341126.
this is how you make me feel when I hold you
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179c816887e4fa8cb1f35b4c91381221f52947ff119b6a9248f1edf207b374de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62364404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0f3c421ff12b7984bf5b628989e2747df47c0fb1d1651b881dc897a87a1a60. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2257402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57700e36117b0f44370bed296d61f7ec363031ce4d74559e73eb9bec4aaef210. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2285149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1014085e37cc9c34c805584832d7fb704360b80e16010427a45a786f18bf28. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72152463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcc04b6abfd97b8c5c7581b0af9c796830e1a7605aec1be5cb6fbd704431ac7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2223420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498947bcd16064aaa83faa6a4c5830de2b7a0aebf5da8dca2275c078fc7207eb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72231223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0837bc85f43e4f8990d8197792a6340699d97e3fc1ec6e52782f0a9de6c1c4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ32246229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6e15bee0b359906f56199b47d7f4d8d778d3fe1b5a115de871e96a3fad413. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2106133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ae140d189e08d0123d6230950fff4ffbd9436ae27418f13cffd017c655a73. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2129891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1014085e37cc9c34c805584832d7fb704360b80e16010427a45a786f18bf28. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72152463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf03cac985b81208ab1bbf4af5d6c9aedd5c0e7f47da7c642caa9856c189ed3b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES91980004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc562fb526864d7af8a96f7b9de0cc445985f2bbc18f2d1f8ce632108ac883cf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1909121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b51928156a18145aaad3cd075709eceb7de54b4bb6f20a46ff07de86a53b75e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX1910204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ed727e6d36b6efdc21269ef531516169d5ea7fd41b1a0c26e420a2f1415769. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ21949015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652257cadfe97aac72e405034d567be354e32f31040c7bf8a4dffb0252cf1889. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2038729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a22b7176a094f2086b4e818392b062db72e067760c63c5cd1e50887e1d4ce0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6F2012379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170f77175b330179394ee60fc22fcbc38653b95ea9acfd14f2ac8523d963663e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62061122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b24751cffbb72ac1574a406df41f9996dfa7df3be70ea6e88c31d748785ac12. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM8DG2078536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c82811495808075c62de5222f5c864751142b61bc5c31247d1fc8a8e4ecaa32. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42015173.